Compressed-air starting device



oA E JORGENSEN, COMPRESSE() AIR STARTING DEVICE.

APPLICAFIONFILED JULY 1919.

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PATENT OFFICE.

OLAV ESKIL JRGNSEN, 0F COPENHAGEN, DENMARK.

COMPRESSED-AIR STARTING DEVICE.

Specification of Letters Patent.

Patented Mar. 22, 1921.

Application iled July 7, 1919. Serial No. 309,199.

1' 'o all whom it may concern Be it known that I, OLAv Esme JRGEN- sim, of No. 16 Fredericiagade, Copenhagen, in the Kingdom of Denmark, a subject of the King of Denmark, have invented certain new and useful Im rovements in Compressed- Air Starting evices; and I do hereby declare the following to be a full, clear, and exact description of the 1nvent1on, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to lettersl or figures of reference marked thereon, which form a part of thisY specification. A

This invention refers to h drocarbon motors, and the like, especially t ose of the Diesel type, of which thev valves are moved by levers actuated from a cam-shaft and which are started and eventually reversed by admission of compressed a1r, or the like, to the c linder through a special startmg valve. s the moment of opening the starting-valve coincides or may coincide wlth the *openingmoment of the fuel-valve, and as the cam of the latter differs from-that of the former, not in situation but only in extent,

starting and fuel valve with a common cam and a common lever mechanism having two points of engagement, one for the one, and another for the other valve, and being so constructed that, as needed, it can be caused to act with the one, or the other of these oints of engagement. orm of construction is shown, by way of example, in the drawing, Figure 1 being a side view and Fig. 2 a plan with several detalls omitted. Fig. 3 is a modified form of construction.

The cam-wheel 1 actuates the roller 2 on the one arm ofthe valve lever 3, of which the other arm carries a special lever 4. On one side of its fulerum 5, said lever presents a point of engagement 6 for the fuel-valve 7, and on the other side a point of engagement 8 for the starting valve 9, and at one side or the other it-is held fast in a suitable manner, e. g. by means of a rod 1Q connected with a head 11, which is loaded with a spring 12. As a consequence of this load, the special lever 4, owing to the movements of the inain lever, will oscillate within such limits that the point of engagement 8 does not come into contact with the starting-valve, while the point of engagement 6 comes into con- A diagram of onetact with and opens the fuel valve when the roller 2 touches the cam 13 or its most prominent part 14. This corresponds to normal working of the motor on fuel oil.

When the motor is to be started or reversed, the resistance of the spring 12, is overcome by means of a suitable handmechanism or a pneumatic, electric, hydraulic, or other mechanism, and the lever 4 is brought into such a position as will bring the point of engagement 8 within and the point of en agement 6 outside of its sphere of action. his may, e. g., be accomplished by constructing the head 11 as a piston in a special cylinder 15 for compressed air or other pressure medium. When this is admitted the load 12 is overcome, and the lever 4 is pressed upward until it strikes against a stop 16 on the main lever, so that, when the cam 13, 14 -actuates the main lever, the lever 4 `oscillates, like a wholly or partially integral part of the main lever, at the same time theroller is brought, farther down .toward the cam so as to enable a more extended cam to work the starting valve.

By means of this invention, a special cam as well as a special valve lever is saved, which is an essential advantage, both in itself and also becauseI of4 economy of space. As shown in Fig. 2,'the valve may be symmetrically arranged on the cylinder cover. Thus the inlet valve 1'? and the exhaust valve 18 may be s mmetrically disposed one on each side of t e fuel and starting valves, which are placed according to a diameter; this arrangement allows room 19 for a water cooling` between thev valves 17 and 18.

ig. 3 shows the modification that the stop (16) for the lever 4 is not arranged on the lever 3, but ony the rod 1() as flange 160 thereon. Furthermore-the spring 12 is located partly inside the piston 11, in order to avoid rojections above the surface of the cover. n thisconstruction it is presumed that the fuel valve opens outward, e. is opened by being lifted, and in order to make this possible there is between the point of engagement 6 and the valve rod 6() inserted a small lever 61.

The shown details are not essential for the nature of the invention and may be' l claim:

l. ln a compressed air starting device, a fuel valve, a starting valve, a lever mechanism for operating both valves, a single cam for operating the lever mechanism, and pneumatically operated means for adjusting the lever mechanism, whereby one or the other of said valves will be actuated by said mechanism.

2. A compressed air starting device, comprising a fuel valve, a starting valve, a valve lever, an auxiliary lever carried thereby for engaging both valves, a rotary cam for actuating the valve lever, and means for controlling the levers whereby the fuel valve is actuated for the normal Working of the motor.

3. A compressed air starting device, comprising a fuel valve, a starting valve, a. valve leveran auxiliary lever carried thereby for engaging both valves, a rotary cam for actuating the valve lever, means for controlling the levers whereby the fuel valve is actuated for the normal Working of the motor, and means for actuating the controlling means :tor operating the starting valve.

1l. A compressed air starting device, coinprising a fuel valve, a starting valve, a valve lever, a cam for rocking the latter, an auxiliary lever carried by the valve lever, means including the latter whereby the auxiliary lever actuates the fuel valve, and means for operating the last named means for moving the auxiliary lever into operative relation to the starting valve.

5. A compressed air starting device, comprising a fuel valve, a starting valve, a valve Lampes lever, a cam for rocking the latter, an auxiliary lever carried by the valve lever, means including the latter whereby the auxiliary lever actuates the fuel valve, and means for operating the last named means for moving the auxiliary lever out of operative relation to the fuel valve and into operative relation to the starting valve.

6. compressed air starting device, comprising a fuel valve, a starting valve, a valve lever, a rotary cam Jfor 'actuatingl the valve lever, and an actuating member operated by said valve lever and adjustable to actuate one or the other of said valves.

T. compressed air starting device, coinprising a fuel valve, a starting valve, a valve lever, a rotary cam for actuating the valve lever, an actuatinr member operated by said valve lever and adjustable to actuate one or the other of said valves, and means for adjusting said actuating member to determine which valve it shall actuate.

8. A compressed air starting device, comprising a fuel valve, a starting valve, a valve lev r, a rotary cam for actuating the valve lever, an actuating member operated by said valve lever for actuating one or the othel` of said valves, controlling means for normally positioning said actuating member to actuate only the fuel valve, and means for varying the controlling means to position the actuating member to actuate only the starting valve.

ln testimony that l claim the foregoing as my invention, l have signed my name.

@LAV ESKIL JHGENSEN. 

